body,header,footer,div,h1,h2,h3,h4,h5,h6,span,ul,li,ol,p,i,b,img{
	margin:0;
	padding:0;
}
ul,li,ol{
	list-style:none;
}
a{
	display:block;
	color:black;
	text-decoration: none;
}
img{
	display:block;
}
html{
	font-size:20px;
}
.fl{
	float:left;
}
.fr{
	float:right;
}
